Potential reasons for unexpected results
Ellie Kilpatrickにより
1. The effect of other neurotransmitters, e.g/ ϒ-aminobutyric acid
2. SAI provides a proxy measure of cortical cholinergic activity
3. Categorisation of fallers by frequency
4. Individuals with PD will experience cholinergic loss to different extents
5. Anti-cholinergic burden
